function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Becherer', 8],
    ['Devi, Sagolsem Asharani & Thongam, Biseshwori', 8],
    ['Friis, Else Marie & Crane, Peter R. & Pedersen, Kaj Raunsgaard', 2],
    ['Gee, Carole T. & Taylor, David Winship & Rember, William C.', 2],
    ['Hess, Hans Ernst & Landolt, Elias & Hirzel, Rosmarie', 6],
    ['Howell, Nathan & Krings, Alexander & Braham, Richard R', 8],
    ['Info Flora', 6],
    ['Ito, Yu & Barfod, Anders S.', 9],
    ['Jarvis, Charlie', 3],
    ['Konrad Lauber & Gerhart Wagner & Andreas Gygax', 3],
    ['Linnaeus, Carolus', 4],
    ['Nacoulma, Blandine M. I. & Schmidt, Marco & Hahn, Karen', 3],
    ['Reveal, James L. & Chase, Mark W. & Iii, - Apg & Iii, Apg', 4],
    ['Smith, Lucy T. & Magdalena, Carlos & Przelomska, Natalia A. S.', 4],
    ['Wang, Hongshan & Dilcher, David L.', 6],
    ['Other (10)', 14]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=90)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);